Oil-vapor engine.



(Application led Feb. 16, 1901.)

6 Sheets-Shad (No Model.)

INVENTR.

- v ATTRNEYS.

WRTNESSES.

.Np. 703,5"t PatentedJuly I, |902. Y

-G. WOOD.

on vAPon ENGINE 'Application ined Feb. 1e, 1901.) (lloillodel.) 6Sheets-Sheet 2.

rn: Noms persas co, momumu; wsHmumN, u. c.

Patented lul'y l, lm02.l G. WOOD. 0 IL VPOR ENGINE. '('Applicntion filedFeb. i6, 1901A 6 vSheets-.Sheet 3,

(No Model.)

ATTURNEYS.

TH': Nonms Pneus co. PHoTcrmm.. wAsHmu'roN, n. c.

Patented July I, |902.

G. WOOD. 0'IL VAPOR ENGINE. (Application med Fb. 16, -1 9o1.4

(No Model.) V

6 Sheets-Sheet 4.

IN VENT OR WI T NESSES r Patented July l, |902.

. a. woon. OIL VAPOR ENGINE.-

`App1ication Bled Feb. 18, 1901..)

6 Sheets-Sheet 5.

(lo Model.)

l l I Y l -..2.2121 955:5 F4 255V o4 TTORNE YS.

m N W w.

Patented 1u|y l, |902. G. WUUD.

OIL VAPUR ENGINE. '(Appumin am rgb. xs, 1901.)

6 ySheehs-Sheet 6.

(No Model.)

INVEN T OR M yTu: Neways arias 00.. momurno., wumToN. n. c.

NITED STATE-sf PATENT Groton.

GEoReE'wooD, or NEWARK, NEW JERSEY.

OIL-VAPOR ENGINE.

SPECIFICATION forming part of` Letters PatentV No. 703,51 1, dated July1, 1 902.

Application filed February 16, 1901. Serial No. 47,599. (No model.) l

To @ZZ whom it may concern:

Be it known thatl, GEORGE VVOODVot` Newark, in the county of Essex, inthe State of New Jersey, have invented new vanduseful Improvements inOil-Vapor Engines, of which the following, taken in connection with theaccompanying drawings, is a full, clear, and exact description.

This invention relates to improvements in oil-vapor engines, and isparticularly adapted for the use of kerosene-oil as a fuelfor-coinbustion within the explosion-chambers.

simple, compact, and highly efficient compound engine for automobileormarinefpurposes in which kerosene-oil is vaporized .by a

burner supplied from the same source as that which supplies the oil forvaporizing.

The further objectof my invention is-'to so construct and arrange thevarious partsof my invention as to produce a` high rate of speed with aslittle vibration to the engine as possible. l

A still further object of this invention is to provide an electricigniting mechanismy having iiXed spark-terminals within theeXplosion-chambers and a circuit-closer controlled by one of the movingparts of-the engine and also to provide battery and dynamo circuitsconnected tothe igniting mechanismand to a suitable switch, wherebythecircuit is first closedv through the. battery for starting the engineand may thenbe switched to the dynamo-circui-t operated by one of themoving parts of said engine.

To this endVtheji-nvention consists in the combination, construction,and arrangement of the component parts of an oilvapor engine, ashereinafter fully described, and pointed out in the claims.

Referring to the drawings, Figure l is atop plan of my improvedoil-vapor engine. Fig. 2 isa side elevation, partly broken away, of myimproved engine, one of the balancewheels being removed and the Apistonsand parts operated thereby being'- shown in their intermediate position.Figs. 3 and 4 are sectional views taken, respectively, on lines 3 3 and4 4, Fig. 1, the pistons in Fig. 4 being shown, respectively, in theirextreme upper and lower positions, the exhaust-valve being shown as openin one of the explosion-chatn- ,the cylinders.

bers, and the circuit-closers being shown in operative position for theother explosionchamber. Fig. 5 is a sectional view similar to Fig. 4 ofthe upper portion of the cylinders, showing particularly theexhaust-valves and the means for operating the same. Fig. 6 is ahorizontal section taken on line 6 6, Fig. 3. Figs. 7 and 8 aresectional views taken, respectively, on lines 7 7 and 8 8, Fig. 3,showing, respectively, the circuit-closer and the means -for operatingthe oil-pump. Figs. 9

Y l and 10 are sectional views taken, respectively, .The object ofmyinvention is to prodnceav on lines 9,9 and 10 10, Fig. 3. Fig. ll is asectionalview taken on lines 11 11, Fig. 3. Fig. 12'is an enlargedsectional view taken on lines 12 12, Fig. 4. Fig. 13 is an elevation ofthe detached pump for supplying water to f the water-jacket, the outercap being removedfor showing the interior mechanism.

Similar reference characters indicate corresponding parts in all theviews.

This invention consists, essentially, of a supporting-frame A, aplurality of cylinders B, pistons C, movable in said cylinders, awalking-beam D, composed of sections and connected to the pistons C, arotary crankshaftV E, mounted on the frame and connected to thewalking-beam sections, a vaporizer F, connectedto. the explosion-chambers, means for supplying oil to the vaporizer, elec- ,tric meansfor igniting the gases within the explosion-chamber, and means forcreating a circulation of water in the water-jacketsof Thesupporting-frame A may be of any. desired form or construction, andpreferably consists of a bed or base plate 1, a shellor casing 2, andsuitable upright standards 3. The bed or base plate 1 may be mountedupon suitable standardswhen used as a stationary engine, the shell orcasing 2 being adapted to receive the walking-beam D and is providedwith removable side-wall sections 4, having caps 5 for receiving theopposite ends of a tubular bearing 6, which forms the pivotal supportfor the walking-beam sections, presently described. The upper wall ofthe shell or casshell or casing 2 is also provided with suitableapertures 8, arranged at the opposite sides of IOO the openings 7 forreceiving they connectingrods which connect the walking-beam to thecrank-shaft, hereinafter described.

The shell or casing 2 is arranged to receive and retain a quantity ofoil for lubricating the bearings of the walking-beam and connectingrodsarranged therein, the removable sections 4 and caps 5 serving to permitaccess to the interior of said shell or casing when desired to remove orrepair anyof the parts arranged therein. The upright standards 3 serveto support the crank-shaft E, and preferably consist of braces orbrackets having their lower ends secured to the side walls of the shellor casing 2 by suitable fastening means, as bolts 9, and their upperends provided with laterallyextending hubs or bushings 10, formed ofgreater diameter than the adjacent diameter of the shaft E for receivingsaid shaft and permitting the insertion of suitable roller-bearings 11for reducing the friction of said shaft in said bushings. sleeves 10 maybe readily inserted into or removed from the upper ends of the bracketsIor standards 3, I usually provide said standards with removable caps,which are clamped around the inner ends of said sleeve or bushingbysuitable clamping bolts 12. This forms a particularly simple andeconomical bearing for'the shaft and may be readily removed and a newone inserted when said bearings become worn or otherwise rendered unfitfor use.

In order that my im proved engine may be readily adapted for stationary,marine, or automobile uses, I generally provide the casing 2 withlaterally-projecting flanges 13, which are adapted to rest upon and tobe secured to any suitable supporting-wall, as thc frame of a boat orautomobile or suitable table or bed of a stationary support.

The cylinders B maybe of any desired size, are provided with anexplosion-chamber 14 and a water-jacket 15, one end of said chamberbeing closed by a suitable wall 1G and the other end being opened forpermitting the insertion and movement of the piston C, presentlydescribed.

The lower end of each cylinder' B is generally reduced in diameter forforming an annular shoulder 17, adapted to rest upon the upper wall ofthe shell or casing 2, the lower reduced portion of said cylinder beingextended into the interior of said shell or casing in order to economizein the height of said cylinder-sand also to supplylubricant to themoving piston from the oil-chamber in the base of the shell or casing.The upper end wall of the explosion chamber or cylinder is preferabl yremovable therefrom, is secured in position by bolts 18, and is providedwith inlet and exhaust chambers 10 and 20, communieating with theexplosion-chamber through suitable inlet and exhaust ports 21 and 22.These inlet and exhaust ports are provided with valves 23 and 24,opening inwardly into the explosion-chamber and provided with In orderthat theA valve-stems 25 and 2G, movable `in guidesformed,frespectively, in "the, upper walls of the chambers 19 and 20.These valves are normally held in their closed position by springs27 and2S, interposed between suitable shoulders provided, respectively, on theouter endsot the stems 25 and 26 and the adjacent outer walls of thechambers 19 and 20. These valves 23 and 24 are generally arranged inpairs, each cylinder being provided with an inlet-valve 23 for admittingthe vapor or live gases to the explosion-chamber at a predeterminedinterval of movement of the-piston of said chamber and with anexhaustvalve 24 for permitting the discharge of the vitiated or explodedgases from saidcylinder, also at apredetermined interval of movement Aof said piston.

The inlet-valve of each chamber isadapted -to be opened automatically bythe suction of leach alternate downward stroke of the piston yfordrawing the vapor into the f explosionchamber above the cylinder. Uponthe following upward stroke'of said-piston the inletvalve isautomatically closed, the gases or vapor admitted to the chamber arecompressed within the explosion-chamber, and-when the piston reaches thelimit of its upward stroke 'or is just on the point ofits returndownstroke the electric circuit for the sparking device is closed,thereby igniting the compressed gases and forcing the piston to thelimitof its downward movement lVhen the piston Vreaches or approachesthis limit of its downward movement, the exhaust-valve 24'is au-=tomatically opened by a suitable mechanism,

hereinafter described, so that whenthe piston returns upwardly by themomentum of the previous discharge or explosion the vitiated or exhaustgases are forced outwardly 'through the'exhaust-port 22 and chamber 2Othrough a muiiler 20' or to the atmosphere, as may be desired.

It is evident from the foregoing description lthat the cylinders Bextend above the upper walls of the shell or casing 2, and that theinlet-chambers 19 and 2O andinletand outlet 'openings 21 and 22 areformed-in the upper rend walls of said cylinders, and that the valve 23is opened at each alternate downward stroke of the piston for admittingthe live 'gases to the explosion-chamber, and thatthe 'of said pistonafter each explosion for discharging the exploded gases from theexplosion-chamber.

The water-jacket 15 surrounds the intermediate portion of theexplosion-chamber and is usually supplied with water by a suitable pumpG, which is connected to aisource of water-supplyQf) and 'is alsoconnected to the lower portions of the Water-jacket by a IOS rroe,511

the same diameter as the annular recesses These gears 34 may be rotatedin any desired manner, one of said gears having its shaft or spindleextended through the outer walls of the casing 32 and is provided with apulley 35, connected bya belt 36 to a suitable pulley 37, mounted on thedriving-shaft E. This pulley 37 usually consists of the hub of one ofthe balance-Wheels previously mentioned, and the belt 36 is so connectedto said pulley of the shaft E and pump-gear shaft as to rotate saidgears in the direction indicated by arrow e', Fig. 13. v

The shell or casing 32 of the pump is provided'with inletand outletvpassages 38 and 39, arranged directly opposite each other and inalinement with the contiguous faces of the gears 34, the passage 38being connected to the source of water-supply (not illustrated) and thepassage 39 being connected by the conduit 30 to the base of thewater-jacket 15 previously described, the gears 34 being arranged toclosely fit Within `the annular recesses 33 and in proximity to theinlet-passage 38. It Will be evident that when the faces of said gearsadjacent to the inlet-passage are rotated in opposite directions fromsaid passage the Water will be drawn through lthe passage 38 and forcedoutwardly through the passage 39 by the teeth of said gears, thusforming a particularly simple and practical means for creating acirculation of water through the water-jackets, it being under@ stoodthat the overIiow-conduits 3l return the water to the source of supply,as previously stated.

The pistons C are movable within the cylinders B and are connected bypiston-rods 40 to independently-movable sections d d of the walking-beamD. As seen in the drawings, these piston-rods usually consist ofsubstantially central bars having their opposite ends provided withbearing-faces 4l and apertured flanges 42, the upper bearing-faces beingadapted to engage suitable spindles or shafts 43 of the pistons C andthe lower bean ing-faces being arranged tov engage bearingfaces 44 ofthe walking-beam sections cl d.

materially strengthen the piston-rods when in operation.

The walking-beam D, as previously stated, is composed ofindependently-movable sections d d', each of which is mounted upon theintermediate portion of a transversely-arranged shaft or tube 6, havingits opposite ends supported in apertures 47 in the side walls of theshell or casing 2, said ends of the shaft or tube being inclosed orprotected by the caps- 5, previously described. Each of the sections d dis journaled at its intermediate portion upon the shaft 6 and isprovided with oppositely-extending arms 48 and 49,-'projectinginopposite directions from said shaft or bearing 6. One of the arms 48 ofeach section is provided with a bearing 44 for receiving the piston-rod,and the other arm 49 is provided with a bearing 50 for receiving thelower end of a connecting-rod, presently described. The bearings 44 ofeach of the sections are arranged at opposite sides of the shaft orbearing 6 in substantial alinement with each other and with the centersof the pistons C, andthe bearings 50 are also arranged at opposite sidesof the shaft 6, but at opposite sides or ends of the bearings 44. Inother words, the bearing 50 of one of the sections is arranged at oneside or end of the bearing 44, and the bearing 50 of the other sectionis arranged at the opposite side or end of the adjacent bearing 44, .andit is apparent that said bearings 50 are arranged in staggered relationto each other, being usually offset a sufficient distance, so that theconnectingrods connected thereto are movable in close proximity to theopposite outer faces of the cylinder B. The intermediate portions ofeach of the arms of each of the sections of the Walking-beam are usuallycut away for the purpose of lightening the sections and for formingseparatedarms for receiving the ends of the bearings 44 and 50.

IOO

IIO

It is apparent from the foregoingdescription that the walking-beam B ispivotally supported in a plane beneath the open ends of the cylinders,that the bearings 44 are arranged in substantial alinement with thecenters of their respective pistons, and the sections of saidwalking-beam are movable independently of each other, for a purposehereinafter described.

The shaft E is revolnbly supported upon the upper ends of the uprightstandards 3 in a plane above the upper or closed end of the cylinders BWithin the `bushings or bearings ll, said shaft being arrangedsubstantially parallel with the lower shaft 47 and is extended beyondsaid bushings for receiving suitable balance-wheels e, which are mountedon the opposite ends of said shaft at opposite sides of the cylindersBand are provided with sprocket-wheelsV or other power-transmittingmechanism E', adapted to be connected to the axle of a vehicle or to anyother mechanism which it may be desired to propel or operate.

The shaft E is provided with crank-arms 5l,

IZO

&

which are arranged in substantially the same vertical plane as thebearings of the corresponding sections of the walking-beam D and areconnected to the bearings 50 by suitable connecting-rods II in suchmanner that when one of the pistons is moved to its extreme upper limitof movement the other piston is moved to its extreme lower position inorder that both pistons may be operated alternately with each other bythe alternate explosion within the explosion-chambers of the cylindersB. In other words, the crank-arms are arranged to project indiametrically opposite directions from the axis of the shaft, theconnecting-rods being formed of the same length and serving to connectsaid crank-arms with the corresponding bearings of the Walkingbeamsections. These connectingrods are constructed similarly to thepiston-rods 40, each usually consisting of a central bar having oppositeend bearing-faces and removable caps e, said caps and adjacent ends ofthe connecting-rod being provided with laterallyprojecting flanges h,having apertures for receiving suitable tie-bolts h', arranged atopposite sides of the central bar, and having their opposite endsextending through said apertures and engaged with the outer faces of thecaps for drawing said caps toward each other and also for forcing thebearings in the opposite end faces of the central bar into engagementwith the adjacent bearings of the crank-arm and walking-beam section.The tie-bars 71,' also serve to materially stilfen the connecting-rodand permit the parts of said connecting-rod to be readily assembled orremoved when desired.

In the operation of my invention I preferably employa suitableoil-vapor, as keroseneoil, which is supplied from a tank or reservoir.(Notillustrated.) Itisthenvaporized by a mechanism or device hereinafterdescribed and is then discharged or drawn into the explosion-chambers ofthe cylinders in the manner hereinbefore described. The oilsupply tankmay be of any desired form or construction (not necessary to hereinillustrate or describe) and is connected to the vaporizing device by asuitable conduit I of sufficient size to feed the oil in the desiredquantities. This vaporizing device usually consists of a reservoir J forreceiving the oil and an oilburner K, which is preferably supplied withoil from the same conduit or source as that which supplies the oil tothe reservoir J. This reservoir is preferably arranged above thecylinders and is connected to each of said cylinders by vaporconduitsi7', discharging into the inlet-chambers 19 of their respectivecylinders. In order that the proper amount of air may be mixed with thevaporized oil, I usually provide the reservoir J with an air-receivingchamber L, having an opening Z in its base connecting with the interiorof the reservoir J and also provided with an additional opening Z foradmitting air to the interior of the chamber L.

The opening Z is normally closed by a valve m, which opens into thereservoir J and is held in its normal closed position by a suitablespring m', interposed between a shoulder provided on the upper end ofthe valve-stem and a transverse bar n on the interior of the chamber L,said transverse bar being provided with an aperture for receiving thesaid valve-stem. The quantity of air admitted to the interior of thechamber L through the opening Z is regulated by the rocking valvesleeveO, telescoping with the walls of the chamber L and provided with anopening o, movable into and out of registration with the opening Z,thereby being adapted to vary the size of the opening, and consequentlyregulate the amount of the air admitted to the air-chamber L and to thereservoir J.

It will be understood upon reference to the foregoing description thatwhen one of the pistons is moved downwardly toward its open end at theproper time for drawing in a charge of gases the valves 23 and also thevalve m. are opened by the suction of the piston and the vaporized oiland air mixed therewith is drawn into the explosion-chamber, it beingunderstood that the Valves 23 and In are opened by the suction of thepiston in its downward movement.

In order to facilitate the mixing of the air with the vaporized gaseswithin the chamber or reservoir J, I provide said reservoir with arotary shaft p, having a series of blades P, which are slightly inclinedin the direction of movement and are disposed in a plane beneath thecenter of the outlet-openings for the vapor for insuring a more perfectmixing of the oil-vapor and air within the reservoir J. The means'forsupplying the oil to the reservoir usually consists of a piston-pump R,having its piston adapted to be actuated in one direction by a spring Sand movable in the opposite direction by cam-shoulders 0, mounted on ashaft T. The cylinder of the pump R is provided with inlet and outletpassages 52 and 53, having check-valves 54 and 55, the valve 54 servingto permit the entrance of the oil and prevent its return flow and thevalve 55 being arranged to permit the discharge of the oil from thecylinder R and to prevent its return flow to said cylinder. The outerend of the piston-rod is usually connected to a frame 56, having one ormore pivoted arms 57 and a yoke 58, provided with a roller 59, saidroller being adapted to be engaged by the cam-faces r for effecting themovement of the piston against the action of the spring S. It issometimes desirable to lessen the stroke of the piston of the pump R,and I therefore provide arms 57 with cam-faces 60,which are arrangedeccentric to their pivotal connections 6l and are engaged with suitablefixed shoulders 62, provided on the cylinder, so that when the arms 57are rocked in one direction the contact-roller 59 will be forced awayfrom the shaft T, and the cam-teeth 1 will therefore move the piston aless distance IOO IIO

' the rocking spindle or pivotal pin 61, one of said arms being providedwith ahand-engaging piece 63, by which the arms 57 may be simultaneouslyrocked in either direction for,

effecting the desired movement of the of the pump.

The inlet-opening 52 of the pump is connectedvto the supply-conduit I,and the outlet-passage `53 is connected to the reservoirJ by a conduit64, having its upper end adjacent to the reservoir J provided with asnitable spraying device 65. This spraying device usually consists of acylinder having its upper end open and provided with atransversely-arianged screen 66 and its lower end provided with aconduit 67, discharging into the reservoir J, the upper end of theconduit 64 being extended through an aperture 68 in the shell 65 abovethe screen 66 and provided with a downturned end 69, discharging ontothe upper surface of said screen. This shell 65 is provided with acentral opening 70, extending downwardly from the open upper end pistonof the shell and communicating with the conduit 67. It is thereforeevident that thereonduit 67 and shell65 form a continuation of theconduit 64, and the screen 66 serves to atomize or spraythe oildischarged from the downturned end 69 of the conduit 64, which entersthe chamber J in this sprayed or atomized conditon,thereby greatlyfacilitating the vaporizing of the oil. It is also understood that -bydischarging the oil into this vopenended receptacle 65 a suitable amountof air is mixed with the atomized oil and is forced into the chamber Jtherewith. n

The burner K is arranged directly beneath the reservoir J and generallyconsists of an ordinary oil-burner having an oil-reservoir 71 at itsbase, which, as previously stated, is supplied with oil from theoil-supply tank through the conduit I. In order to insure a permanentsupply or definite quantity of oil in the reservoir of the burner K, Iusually provide the conduit leadingto the burnerreservoir with anautomatic regulator, which is adapted to maintain a predetermined levelof oil within the saidreservoir of the burner. This automatic regulatorgenerally consists of an oil-reservoir 72, arranged in substantially thesame plane or in a plane slightly above the reservoir 71 of the burnerand is provided with inlet and outlet openings 7 3 and 74 and a iioat75, the inlet-opening being connected by a branch conduit 76 to thesupply-conduit I, and the outlet-opening is connected by a conduit 77 tothe reservoir 71 of the burner and preferably at its base. Theinlet-opening 78 is provided with a valve 78, which is adapted to openinwardly by its own gravity and normally rests upon the stem orsupporting-rod 7 9 ofthe float 75, said stem or rod 79 being hinged at80 to the in- 'to close the valve 74.

ner portion of the shell or easing of the reservoir 72.

In order to supply oil to the reservoir automatically, I usually arrangea main oil-supply tank in a plane above the receiver 72, so that the oilmay readily low by gravity to said receiver when the float 75 issuieiently low to permit the valve 74 to be opened. After a sufficientquantity of oil has been admitted to this receiver the ioat is elevatedand automatically closes the valve 74, thereby shutting off the supplyof oil to the receiver 72. It is understood, however, that the oil isalways supplied to the reservoir of the burner while said valve 74 isopen and that both of said reservoirs are filled to the desired heightor level before the float acts It is apparent that the relative positionof the receiver 72 to the reservoir 7l of the burner automaticallymaintains a definite quantity of oil in the reservoir 71 and that whenthe oil is sufficiently' low withinAthe receiver 72 the float 75 permitsthe valve 74 to open for the admission of additional oil from the mainsupply-tank.

Any desired `means may be employed for supporting lthe receiver in thedesired position and permitting its vertical adjustment. This meansusually consists of a clamp 8l, having one end secured to the reservoirand its other end provided with a split annular band arranged to beclamped upon one of-the vapor-supply conduits 7' and provided with aclamping-screw 82 for forcing the split sections into engagementwith'the conduit j, said clamp permitting the receiver to be adjustedvertically along said conduit j and secured at any desired height.

The means for igniting the live gases or vapor after the same has beendrawn into the cylinder and compressed consists of an electric circuithaving fixed sparking-terminals S3 arranged within the explosion-chamberin proximity to the upper endy wall of said chamber and a circuit-closer84 arranged externally to the'cylinders for controlling the spark andsynchronizing the ignition of the gases through said sparking-terminalswith certain movements of the piston. The sparking-terminals 83preferably consist of platinum wires secured to the inner ends ofinsulated conductors or wires S5, said wires being einbedded ininsulatingmaterial 86, which in turn is inclosed in a threaded tube orplug 87, secured in a threaded aperture 88 in the uppenend wall of eachof the cylinders B.

The circuit-closer 84 is preferably mounted upon the shaft T, previouslymentioned in connection with the oil-pump R, and consists of a rockingframeor support 89, terminals 90 and 91, and eccentric cam-teeth 92 and93, secu red to the shaftT. The supporting-frame S9 is usually mountedupon the shaft T, is formed of insulating material, and consists ofseparated outer and intermediate bars or plates of fiber or similarmaterial having their IOO TIO

lower ends perforated for receiving the shaft T and their upper endsprovided with a connecting-bar 94C for tying said4 plates to each otherand holding them in their proper relative position. There are preferablytwo circuit-closers mounted upon the frame S9 and` shaft T, one for eachcylinder, the circuitcloser of each pair consisting of the terminals and91 and one of the series of the camteeth 92 or 93. The terminal 90usually consists of a stud or metallic projection having theadjusting-screw 95, and the terminal 91 generally consists of a similarstud having a spring-arm 96 and a contact-surface 97 at its intermediateportion, the free end of said spring being provided with an engagingshoulder 9S, adapted to be engaged by one of the series of cam-teeth, as92, whereby the contact-face 97 is forced into contact with the innerend of the adj listing-screw 95, said spring being so arranged as to benormally separated from said terminal 91, except at certain intervals ofmovement of the piston C. The shaft D is supported upon an uprightstandard U, projecting upwardly from the upper ends of the cylinders B,is provided with a gear 99, meshing with a pinion 100, which is securedto the main shaft E in order to obtain the proper movement of the shaftT, bearing the oil-pump-operating cams r and the cam-teeth 92 and 93with relation to the movement of the piston C. The gear 99 is formed ofsubstantially twice the diameter of the pinion 100, thereby rotating theshaft T at substantially half the rate of speed as the slmftE,\vhicl1shaft T is also rotated in a reverse direction of movement of the shaftE. I also provide the shaft T with cams t, which are adapted to operatesuitable bell-cranks 15, which in turn are arranged to open theexhaust-valves 2a upon each alternate upward movementof the pistons C.These bell-cranks t' are pivoted at a to the upright standard U, theirupper ends being provided with antifrictionrollers u for engaging thecams t, and the opposite ends of said bell-cranks are adapted tonormally rest upon the upper ends of the exhaust-valve stems 2G.

As seen in Fig. 4, the piston at the righthand cylinder is shown asmoved to its upward limit of stroke and as compressing the live gaseswithin the explosion-chamber, and the piston C at the left of saidchamber is shown as in its extreme lower position. When the piston is inits upward position, as seen at the right in Fig. 1, the teeth 92 of thecircuitcloser for that cylinder are in the position for engaging theshoulder 9S and forcing the contact-face 97 of the terminal 91 intoengagement with the terminal 90, thereby closing the circuit through thesparking-terminals of this cylinder and igniting the live gases therein.The gases thus ignited force the piston downwardly, thereby actuatingthe walkingbeam section connected thereto and also the main shaft Ethrough the connecting-rod, which is connected to the opposite end ofsaid walking-beam section. This movement of the pistou rotates the shaftE one complete revolution. Vhen the piston has been forced to the limitof its downward movement, the eX- haust-valve of the chamber of saidpiston is opened by means of the corresponding bellcrank and cam foroperating the same, so that when the pistons return upwardly theexploded gases are forced outwardly through the exhaust-chamber, as seenat the left, Fig. 4. Vhen one of the pistons is being forced down by theexplosion, the exhaust-valve of the other piston is opened fordischarging the exploded gases therefrom, and the cam 1f upon the shaftT are so relatively arranged as to effect this movement of theexhaust-valves through the bell-cranks and the cam-teeth 92 and 93 arealso so relatively arranged as to ignite the gases at each alternateupward stroke of the said pistons after the exploded gases have beenexpelled from the explosionchambers.

In order to provide for the initial ignition of the gases within theexplosion-chambers, I provide a battery V, which is connected bya switcho to the circuit of the sparking-terminals and circuit-closers. I alsoprovide a dynamo XV, which is also connected to the circuit providedwith the sparking-coils and circuitclosers and is actuated by one of thebalance-wheels E, preferably through the means of a friction-wheel fw,provided on the shaft of the dynamo and engaged with the periphery ofthe balance-wheel E. The switch v is connected also to thedynamo-circuit in order that after the engine is started the switch maybe connected with the dynamo-circuit and the engine adapted to supplyits own current through the dynamo W.

The operation of my invention will now bo readily understood uponreference to the foregoing description and the accompanyingdrawings,anditwillbcnoted thatsome change may be made in the detailconstruction and arrangement of the parts of my invention withoutdeparting from the spirit thereof. Therefore I do not limit myself tothe preciso construction and arrangement shown and described.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

l. In a vapor-engine, a pair of independent cylinders each provided withan explosionchamber and a piston, a rotary crank-shaft at the closedends of the cylinders, means for supplying explosive gases to thechambers, electric means controlled by the engine for igniting saidgases, a walking-beam journaled at the open ends of the chambers andcomposed of independently-movable sections each having an arm connectedto one of the pistons and an additional oppositely-projecting armconnected to the crank-shaft.

2. A vapor-engine comprising a cylinder having an explosion-chamber anda piston, a walking-beam at the open end of the chamber IOT) IIO

. a second shaft at the closed end of the chamber rotated by thecrank-shaft, sparking-terminals of an electric circuit in theexplosioncharnber, a circuitcloser connected in the electric circuit andmeans provided on the second shaft for controlling the operation of thecircuit-closer.

3. In a vapor-engine, in combination, a cylinder having anexplosion-chamber and a piston, a Walking-beam at the open end of thechamber and connected to the piston, a crankshaft at the closed end ofthe chamber and connected to the Walking-beam, means for introducingvapor int-o the explosion-chamber, inlet and exhaust valves in theclosed end of the explosion-chamber, a second shaft rotated by thecrank-shaft, sparking-terminals in the electric circuit in theexplosion-chamber, means provided on the second shaft for closing thecircuit through the sparking-terminals and additional means actuated bythe second shaft for opening the exhaust-valves.

4. A vapor-engine comprising a cylinder having an explosion-chamber andinlet and exhaust valves, a piston movable in the chamber, aWalking-beam at the open end of the chamber and connected to the piston,a crankshaft at the closed end of the chamber and connected to theWalking -bearn, a second shaft at the closed` end of the chamber rotatedby the crank-shaft, an oil-vaporizing device connected to theexplosion-chamber, a pump connected to an oil-supply conduit and to thevaporizing device for the purpose described and means provided on thesecond shaft for actuating the pump.

5. A vapor-engine comprising a cylinder having an explosion-chamber andinlet and exhaust ports, sparking-terminals of an electric circuitWithin the explosion-chamber, a piston movable in the chamber, aWalkingbeam at the open end of the chamber, and connecting to thepiston, a crank-shaft at the closed end of the chamber and connected tothe walking-beam, a vaporizing device connected to the inlet-port, avalve for the exhaust-port, a second shaft rotated by the crank-shaft, alever for opening the exhaustvalve, means provided on the second shaftfor operating the lever, a pump for supplying oil to the vaporizingdevice, and means provided ou the second shaft for operating the pump.

6. In a vapor-engine, in combination, a cylinder having anexplosion-chamber and inlet and exhaust ports, valves for the ports,sparking-terminals of an electric circuit in the eX- plosion-chamber, acrank-shaft at the closed end of the chamber, connections between thepiston and the crank-shaft for rotating the crank-shaft, a second shaftactuatedby the crank-shaft, a circuit-closer connected in the electriccircuit, means provided on the second shaft for operating thecircuit-closer, a lever for opening the exhaust-valve, additional meansprovided on the second shaft for operating the lever and anoil-vaporizing device connected to the inlet-openin g for the purposeset forth.

7. A vapor-engine comprising a. cylinder having an explosion-chamberland inlet Vand exhaust ports, valves for the'ports, a piston movable inthe chamber, a crank-shaft at the closed end of the chamber, connectionsbetween the piston and the crank-shaft for rotating the latter, a secondshaft rotated by the crank-shaft, an oil-vaporizing device connected tothe inlet-opening, a pump for supplying oil to the vaporizing device,means provided on the second shaft for operating lthe pump,sparking-terminals ofl an electric circuit in the explosion-chamber, acircuitcloser connected in said circuit means pprovided on the secondshaft for operating the circuit-closer, aleverfor opening theexhaustvalve and additional means provided on the second shaft foroperating the lever.

In Witness whereof I have hereunto set my hand this 31st day of January,1901.

GEORGE WOOD. Witnesses:

CHESTER R. I-IoAG, WM. A. JoNEs.

